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C++: Difference between revisions
→Smart Pointers
| Line 142: | Line 142: | ||
Example: | Example: | ||
<syntaxhighlight lang="cpp"> | <syntaxhighlight lang="cpp"> | ||
// Block-scope car | |||
Car my_car; | |||
// Old C++ | |||
Car *my_car = new Car(); | |||
// Must call delete my_car; to avoid memory leaks. | |||
// Using unique ptr | |||
std::unique_ptr<Car> my_car(new Car()); | std::unique_ptr<Car> my_car(new Car()); | ||
// Or starting from C++14 | // Or starting from C++14 | ||
auto my_car = std::make_unique<Car>(); | auto my_car = std::make_unique<Car>(); | ||
</syntaxhighlight> | </syntaxhighlight> | ||
Note: If the object you need is not very large, you can consider just including it as part of your class (or leaving it on the stack) rather than use pointers. | |||
====Garbage Collection==== | ====Garbage Collection==== | ||